2009-04-18 01:33:26 +00:00
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/*
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* Copyright 2008 Cisco Systems, Inc. All rights reserved.
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* Copyright 2007 Nuova Systems, Inc. All rights reserved.
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/module.h>
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#include <linux/mempool.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/skbuff.h>
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#include <linux/interrupt.h>
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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2009-11-03 19:49:22 +00:00
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#include <linux/if_ether.h>
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#include <scsi/fc/fc_fip.h>
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2009-04-18 01:33:26 +00:00
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_transport.h>
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#include <scsi/scsi_transport_fc.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/libfc.h>
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#include <scsi/fc_frame.h>
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#include "vnic_dev.h"
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#include "vnic_intr.h"
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#include "vnic_stats.h"
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#include "fnic_io.h"
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#include "fnic.h"
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#define PCI_DEVICE_ID_CISCO_FNIC 0x0045
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/* Timer to poll notification area for events. Used for MSI interrupts */
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#define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
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static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
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static struct kmem_cache *fnic_io_req_cache;
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LIST_HEAD(fnic_list);
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DEFINE_SPINLOCK(fnic_list_lock);
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/* Supported devices by fnic module */
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static struct pci_device_id fnic_id_table[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
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{ 0, }
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};
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MODULE_DESCRIPTION(DRV_DESCRIPTION);
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MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
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"Joseph R. Eykholt <jeykholt@cisco.com>");
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MODULE_LICENSE("GPL v2");
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MODULE_VERSION(DRV_VERSION);
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MODULE_DEVICE_TABLE(pci, fnic_id_table);
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unsigned int fnic_log_level;
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module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
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static struct libfc_function_template fnic_transport_template = {
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.frame_send = fnic_send,
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2009-11-03 19:49:22 +00:00
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.lport_set_port_id = fnic_set_port_id,
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2009-04-18 01:33:26 +00:00
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.fcp_abort_io = fnic_empty_scsi_cleanup,
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.fcp_cleanup = fnic_empty_scsi_cleanup,
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.exch_mgr_reset = fnic_exch_mgr_reset
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};
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static int fnic_slave_alloc(struct scsi_device *sdev)
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{
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struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
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struct fc_lport *lp = shost_priv(sdev->host);
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struct fnic *fnic = lport_priv(lp);
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sdev->tagged_supported = 1;
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if (!rport || fc_remote_port_chkready(rport))
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return -ENXIO;
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scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH);
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rport->dev_loss_tmo = fnic->config.port_down_timeout / 1000;
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return 0;
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}
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static struct scsi_host_template fnic_host_template = {
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.module = THIS_MODULE,
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.name = DRV_NAME,
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.queuecommand = fnic_queuecommand,
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.eh_abort_handler = fnic_abort_cmd,
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.eh_device_reset_handler = fnic_device_reset,
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.eh_host_reset_handler = fnic_host_reset,
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.slave_alloc = fnic_slave_alloc,
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.change_queue_depth = fc_change_queue_depth,
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.change_queue_type = fc_change_queue_type,
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.this_id = -1,
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.cmd_per_lun = 3,
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.can_queue = FNIC_MAX_IO_REQ,
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.use_clustering = ENABLE_CLUSTERING,
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.sg_tablesize = FNIC_MAX_SG_DESC_CNT,
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.max_sectors = 0xffff,
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.shost_attrs = fnic_attrs,
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};
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static void fnic_get_host_speed(struct Scsi_Host *shost);
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static struct scsi_transport_template *fnic_fc_transport;
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static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
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static struct fc_function_template fnic_fc_functions = {
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.show_host_node_name = 1,
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.show_host_port_name = 1,
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.show_host_supported_classes = 1,
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.show_host_supported_fc4s = 1,
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.show_host_active_fc4s = 1,
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.show_host_maxframe_size = 1,
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.show_host_port_id = 1,
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.show_host_supported_speeds = 1,
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.get_host_speed = fnic_get_host_speed,
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.show_host_speed = 1,
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.show_host_port_type = 1,
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.get_host_port_state = fc_get_host_port_state,
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.show_host_port_state = 1,
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.show_host_symbolic_name = 1,
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.show_rport_maxframe_size = 1,
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.show_rport_supported_classes = 1,
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.show_host_fabric_name = 1,
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.show_starget_node_name = 1,
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.show_starget_port_name = 1,
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.show_starget_port_id = 1,
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.show_rport_dev_loss_tmo = 1,
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.issue_fc_host_lip = fnic_reset,
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.get_fc_host_stats = fnic_get_stats,
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.dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
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.terminate_rport_io = fnic_terminate_rport_io,
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2009-11-03 19:49:32 +00:00
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.bsg_request = fc_lport_bsg_request,
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2009-04-18 01:33:26 +00:00
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};
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static void fnic_get_host_speed(struct Scsi_Host *shost)
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{
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struct fc_lport *lp = shost_priv(shost);
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struct fnic *fnic = lport_priv(lp);
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u32 port_speed = vnic_dev_port_speed(fnic->vdev);
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/* Add in other values as they get defined in fw */
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switch (port_speed) {
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case 10000:
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fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
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break;
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default:
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fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
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break;
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}
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}
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static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
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{
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int ret;
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struct fc_lport *lp = shost_priv(host);
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struct fnic *fnic = lport_priv(lp);
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struct fc_host_statistics *stats = &lp->host_stats;
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struct vnic_stats *vs;
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unsigned long flags;
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if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
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return stats;
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fnic->stats_time = jiffies;
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spin_lock_irqsave(&fnic->fnic_lock, flags);
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ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
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spin_unlock_irqrestore(&fnic->fnic_lock, flags);
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if (ret) {
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FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
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"fnic: Get vnic stats failed"
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" 0x%x", ret);
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return stats;
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}
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vs = fnic->stats;
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stats->tx_frames = vs->tx.tx_unicast_frames_ok;
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stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4;
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stats->rx_frames = vs->rx.rx_unicast_frames_ok;
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stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4;
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stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
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stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
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stats->invalid_crc_count = vs->rx.rx_crc_errors;
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stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ;
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stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
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stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
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return stats;
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}
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void fnic_log_q_error(struct fnic *fnic)
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{
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unsigned int i;
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u32 error_status;
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for (i = 0; i < fnic->raw_wq_count; i++) {
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error_status = ioread32(&fnic->wq[i].ctrl->error_status);
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if (error_status)
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shost_printk(KERN_ERR, fnic->lport->host,
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"WQ[%d] error_status"
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" %d\n", i, error_status);
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}
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for (i = 0; i < fnic->rq_count; i++) {
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error_status = ioread32(&fnic->rq[i].ctrl->error_status);
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if (error_status)
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shost_printk(KERN_ERR, fnic->lport->host,
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"RQ[%d] error_status"
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" %d\n", i, error_status);
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}
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for (i = 0; i < fnic->wq_copy_count; i++) {
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error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
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if (error_status)
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shost_printk(KERN_ERR, fnic->lport->host,
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"CWQ[%d] error_status"
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" %d\n", i, error_status);
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}
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}
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void fnic_handle_link_event(struct fnic *fnic)
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{
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unsigned long flags;
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spin_lock_irqsave(&fnic->fnic_lock, flags);
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if (fnic->stop_rx_link_events) {
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spin_unlock_irqrestore(&fnic->fnic_lock, flags);
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return;
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}
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spin_unlock_irqrestore(&fnic->fnic_lock, flags);
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queue_work(fnic_event_queue, &fnic->link_work);
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}
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static int fnic_notify_set(struct fnic *fnic)
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{
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int err;
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switch (vnic_dev_get_intr_mode(fnic->vdev)) {
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case VNIC_DEV_INTR_MODE_INTX:
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err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
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break;
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case VNIC_DEV_INTR_MODE_MSI:
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err = vnic_dev_notify_set(fnic->vdev, -1);
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break;
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case VNIC_DEV_INTR_MODE_MSIX:
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err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
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break;
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default:
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shost_printk(KERN_ERR, fnic->lport->host,
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"Interrupt mode should be set up"
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" before devcmd notify set %d\n",
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vnic_dev_get_intr_mode(fnic->vdev));
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err = -1;
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break;
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}
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return err;
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}
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static void fnic_notify_timer(unsigned long data)
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{
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struct fnic *fnic = (struct fnic *)data;
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fnic_handle_link_event(fnic);
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mod_timer(&fnic->notify_timer,
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round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
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}
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static void fnic_notify_timer_start(struct fnic *fnic)
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{
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switch (vnic_dev_get_intr_mode(fnic->vdev)) {
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case VNIC_DEV_INTR_MODE_MSI:
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/*
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* Schedule first timeout immediately. The driver is
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* initiatialized and ready to look for link up notification
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*/
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mod_timer(&fnic->notify_timer, jiffies);
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break;
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default:
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/* Using intr for notification for INTx/MSI-X */
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break;
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};
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}
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static int fnic_dev_wait(struct vnic_dev *vdev,
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int (*start)(struct vnic_dev *, int),
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int (*finished)(struct vnic_dev *, int *),
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int arg)
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{
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unsigned long time;
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int done;
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int err;
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err = start(vdev, arg);
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if (err)
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return err;
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/* Wait for func to complete...2 seconds max */
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time = jiffies + (HZ * 2);
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do {
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err = finished(vdev, &done);
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if (err)
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return err;
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if (done)
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return 0;
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schedule_timeout_uninterruptible(HZ / 10);
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} while (time_after(time, jiffies));
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return -ETIMEDOUT;
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}
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static int fnic_cleanup(struct fnic *fnic)
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{
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unsigned int i;
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int err;
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vnic_dev_disable(fnic->vdev);
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for (i = 0; i < fnic->intr_count; i++)
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vnic_intr_mask(&fnic->intr[i]);
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for (i = 0; i < fnic->rq_count; i++) {
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err = vnic_rq_disable(&fnic->rq[i]);
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if (err)
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return err;
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}
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for (i = 0; i < fnic->raw_wq_count; i++) {
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|
|
err = vnic_wq_disable(&fnic->wq[i]);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
for (i = 0; i < fnic->wq_copy_count; i++) {
|
|
|
|
err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Clean up completed IOs and FCS frames */
|
|
|
|
fnic_wq_copy_cmpl_handler(fnic, -1);
|
|
|
|
fnic_wq_cmpl_handler(fnic, -1);
|
|
|
|
fnic_rq_cmpl_handler(fnic, -1);
|
|
|
|
|
|
|
|
/* Clean up the IOs and FCS frames that have not completed */
|
|
|
|
for (i = 0; i < fnic->raw_wq_count; i++)
|
|
|
|
vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
|
|
|
|
for (i = 0; i < fnic->rq_count; i++)
|
|
|
|
vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
|
|
|
|
for (i = 0; i < fnic->wq_copy_count; i++)
|
|
|
|
vnic_wq_copy_clean(&fnic->wq_copy[i],
|
|
|
|
fnic_wq_copy_cleanup_handler);
|
|
|
|
|
|
|
|
for (i = 0; i < fnic->cq_count; i++)
|
|
|
|
vnic_cq_clean(&fnic->cq[i]);
|
|
|
|
for (i = 0; i < fnic->intr_count; i++)
|
|
|
|
vnic_intr_clean(&fnic->intr[i]);
|
|
|
|
|
|
|
|
mempool_destroy(fnic->io_req_pool);
|
|
|
|
for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
|
|
|
|
mempool_destroy(fnic->io_sgl_pool[i]);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void fnic_iounmap(struct fnic *fnic)
|
|
|
|
{
|
|
|
|
if (fnic->bar0.vaddr)
|
|
|
|
iounmap(fnic->bar0.vaddr);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate element for mempools requiring GFP_DMA flag.
|
|
|
|
* Otherwise, checks in kmem_flagcheck() hit BUG_ON().
|
|
|
|
*/
|
|
|
|
static void *fnic_alloc_slab_dma(gfp_t gfp_mask, void *pool_data)
|
|
|
|
{
|
|
|
|
struct kmem_cache *mem = pool_data;
|
|
|
|
|
|
|
|
return kmem_cache_alloc(mem, gfp_mask | GFP_ATOMIC | GFP_DMA);
|
|
|
|
}
|
|
|
|
|
2009-11-03 19:49:22 +00:00
|
|
|
/**
|
|
|
|
* fnic_get_mac() - get assigned data MAC address for FIP code.
|
|
|
|
* @lport: local port.
|
|
|
|
*/
|
|
|
|
static u8 *fnic_get_mac(struct fc_lport *lport)
|
|
|
|
{
|
|
|
|
struct fnic *fnic = lport_priv(lport);
|
|
|
|
|
|
|
|
return fnic->data_src_addr;
|
|
|
|
}
|
|
|
|
|
2009-04-18 01:33:26 +00:00
|
|
|
static int __devinit fnic_probe(struct pci_dev *pdev,
|
|
|
|
const struct pci_device_id *ent)
|
|
|
|
{
|
|
|
|
struct Scsi_Host *host;
|
|
|
|
struct fc_lport *lp;
|
|
|
|
struct fnic *fnic;
|
|
|
|
mempool_t *pool;
|
|
|
|
int err;
|
|
|
|
int i;
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate SCSI Host and set up association between host,
|
|
|
|
* local port, and fnic
|
|
|
|
*/
|
2009-11-03 19:46:08 +00:00
|
|
|
lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
|
|
|
|
if (!lp) {
|
|
|
|
printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
|
2009-04-18 01:33:26 +00:00
|
|
|
err = -ENOMEM;
|
|
|
|
goto err_out;
|
|
|
|
}
|
2009-11-03 19:46:08 +00:00
|
|
|
host = lp->host;
|
2009-04-18 01:33:26 +00:00
|
|
|
fnic = lport_priv(lp);
|
|
|
|
fnic->lport = lp;
|
2009-11-03 19:49:22 +00:00
|
|
|
fnic->ctlr.lp = lp;
|
2009-04-18 01:33:26 +00:00
|
|
|
|
|
|
|
snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
|
|
|
|
host->host_no);
|
|
|
|
|
|
|
|
host->transportt = fnic_fc_transport;
|
|
|
|
|
|
|
|
err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ);
|
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"Unable to alloc shared tag map\n");
|
|
|
|
goto err_out_free_hba;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Setup PCI resources */
|
|
|
|
pci_set_drvdata(pdev, fnic);
|
|
|
|
|
|
|
|
fnic->pdev = pdev;
|
|
|
|
|
|
|
|
err = pci_enable_device(pdev);
|
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"Cannot enable PCI device, aborting.\n");
|
|
|
|
goto err_out_free_hba;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = pci_request_regions(pdev, DRV_NAME);
|
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"Cannot enable PCI resources, aborting\n");
|
|
|
|
goto err_out_disable_device;
|
|
|
|
}
|
|
|
|
|
|
|
|
pci_set_master(pdev);
|
|
|
|
|
|
|
|
/* Query PCI controller on system for DMA addressing
|
|
|
|
* limitation for the device. Try 40-bit first, and
|
|
|
|
* fail to 32-bit.
|
|
|
|
*/
|
2009-06-24 14:42:25 +00:00
|
|
|
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
|
2009-04-18 01:33:26 +00:00
|
|
|
if (err) {
|
2009-06-24 14:42:25 +00:00
|
|
|
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
2009-04-18 01:33:26 +00:00
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"No usable DMA configuration "
|
|
|
|
"aborting\n");
|
|
|
|
goto err_out_release_regions;
|
|
|
|
}
|
2009-06-24 14:42:25 +00:00
|
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
|
2009-04-18 01:33:26 +00:00
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"Unable to obtain 32-bit DMA "
|
|
|
|
"for consistent allocations, aborting.\n");
|
|
|
|
goto err_out_release_regions;
|
|
|
|
}
|
|
|
|
} else {
|
2009-06-24 14:42:25 +00:00
|
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40));
|
2009-04-18 01:33:26 +00:00
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"Unable to obtain 40-bit DMA "
|
|
|
|
"for consistent allocations, aborting.\n");
|
|
|
|
goto err_out_release_regions;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Map vNIC resources from BAR0 */
|
|
|
|
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"BAR0 not memory-map'able, aborting.\n");
|
|
|
|
err = -ENODEV;
|
|
|
|
goto err_out_release_regions;
|
|
|
|
}
|
|
|
|
|
|
|
|
fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
|
|
|
|
fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
|
|
|
|
fnic->bar0.len = pci_resource_len(pdev, 0);
|
|
|
|
|
|
|
|
if (!fnic->bar0.vaddr) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"Cannot memory-map BAR0 res hdr, "
|
|
|
|
"aborting.\n");
|
|
|
|
err = -ENODEV;
|
|
|
|
goto err_out_release_regions;
|
|
|
|
}
|
|
|
|
|
|
|
|
fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
|
|
|
|
if (!fnic->vdev) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"vNIC registration failed, "
|
|
|
|
"aborting.\n");
|
|
|
|
err = -ENODEV;
|
|
|
|
goto err_out_iounmap;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
|
|
|
|
vnic_dev_open_done, 0);
|
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"vNIC dev open failed, aborting.\n");
|
|
|
|
goto err_out_vnic_unregister;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = vnic_dev_init(fnic->vdev, 0);
|
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"vNIC dev init failed, aborting.\n");
|
|
|
|
goto err_out_dev_close;
|
|
|
|
}
|
|
|
|
|
2009-11-03 19:49:22 +00:00
|
|
|
err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
|
2009-04-18 01:33:26 +00:00
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"vNIC get MAC addr failed \n");
|
|
|
|
goto err_out_dev_close;
|
|
|
|
}
|
2009-11-03 19:49:22 +00:00
|
|
|
/* set data_src for point-to-point mode and to keep it non-zero */
|
|
|
|
memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
|
2009-04-18 01:33:26 +00:00
|
|
|
|
|
|
|
/* Get vNIC configuration */
|
|
|
|
err = fnic_get_vnic_config(fnic);
|
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"Get vNIC configuration failed, "
|
|
|
|
"aborting.\n");
|
|
|
|
goto err_out_dev_close;
|
|
|
|
}
|
|
|
|
host->max_lun = fnic->config.luns_per_tgt;
|
|
|
|
host->max_id = FNIC_MAX_FCP_TARGET;
|
2009-10-21 23:28:19 +00:00
|
|
|
host->max_cmd_len = FNIC_MAX_CMD_LEN;
|
2009-04-18 01:33:26 +00:00
|
|
|
|
|
|
|
fnic_get_res_counts(fnic);
|
|
|
|
|
|
|
|
err = fnic_set_intr_mode(fnic);
|
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"Failed to set intr mode, "
|
|
|
|
"aborting.\n");
|
|
|
|
goto err_out_dev_close;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = fnic_alloc_vnic_resources(fnic);
|
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"Failed to alloc vNIC resources, "
|
|
|
|
"aborting.\n");
|
2009-11-03 19:45:37 +00:00
|
|
|
goto err_out_clear_intr;
|
2009-04-18 01:33:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* initialize all fnic locks */
|
|
|
|
spin_lock_init(&fnic->fnic_lock);
|
|
|
|
|
|
|
|
for (i = 0; i < FNIC_WQ_MAX; i++)
|
|
|
|
spin_lock_init(&fnic->wq_lock[i]);
|
|
|
|
|
|
|
|
for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
|
|
|
|
spin_lock_init(&fnic->wq_copy_lock[i]);
|
|
|
|
fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
|
|
|
|
fnic->fw_ack_recd[i] = 0;
|
|
|
|
fnic->fw_ack_index[i] = -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < FNIC_IO_LOCKS; i++)
|
|
|
|
spin_lock_init(&fnic->io_req_lock[i]);
|
|
|
|
|
|
|
|
fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
|
|
|
|
if (!fnic->io_req_pool)
|
|
|
|
goto err_out_free_resources;
|
|
|
|
|
|
|
|
pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab,
|
|
|
|
fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
|
|
|
|
if (!pool)
|
|
|
|
goto err_out_free_ioreq_pool;
|
|
|
|
fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
|
|
|
|
|
|
|
|
pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab,
|
|
|
|
fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
|
|
|
|
if (!pool)
|
|
|
|
goto err_out_free_dflt_pool;
|
|
|
|
fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
|
|
|
|
|
|
|
|
/* setup vlan config, hw inserts vlan header */
|
|
|
|
fnic->vlan_hw_insert = 1;
|
|
|
|
fnic->vlan_id = 0;
|
|
|
|
|
2009-11-03 19:49:22 +00:00
|
|
|
/* Initialize the FIP fcoe_ctrl struct */
|
|
|
|
fnic->ctlr.send = fnic_eth_send;
|
|
|
|
fnic->ctlr.update_mac = fnic_update_mac;
|
|
|
|
fnic->ctlr.get_src_addr = fnic_get_mac;
|
|
|
|
fcoe_ctlr_init(&fnic->ctlr);
|
|
|
|
if (fnic->config.flags & VFCF_FIP_CAPABLE) {
|
|
|
|
shost_printk(KERN_INFO, fnic->lport->host,
|
|
|
|
"firmware supports FIP\n");
|
2010-02-16 20:15:44 +00:00
|
|
|
/* enable directed and multicast */
|
|
|
|
vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
|
2009-11-03 19:49:22 +00:00
|
|
|
vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
|
|
|
|
vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
|
|
|
|
} else {
|
|
|
|
shost_printk(KERN_INFO, fnic->lport->host,
|
|
|
|
"firmware uses non-FIP mode\n");
|
|
|
|
fnic->ctlr.mode = FIP_ST_NON_FIP;
|
|
|
|
}
|
2009-04-18 01:33:26 +00:00
|
|
|
fnic->state = FNIC_IN_FC_MODE;
|
|
|
|
|
|
|
|
/* Enable hardware stripping of vlan header on ingress */
|
|
|
|
fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
|
|
|
|
|
|
|
|
/* Setup notification buffer area */
|
|
|
|
err = fnic_notify_set(fnic);
|
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"Failed to alloc notify buffer, aborting.\n");
|
|
|
|
goto err_out_free_max_pool;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Setup notify timer when using MSI interrupts */
|
|
|
|
if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
|
|
|
|
setup_timer(&fnic->notify_timer,
|
|
|
|
fnic_notify_timer, (unsigned long)fnic);
|
|
|
|
|
|
|
|
/* allocate RQ buffers and post them to RQ*/
|
|
|
|
for (i = 0; i < fnic->rq_count; i++) {
|
|
|
|
err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
|
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"fnic_alloc_rq_frame can't alloc "
|
|
|
|
"frame\n");
|
|
|
|
goto err_out_free_rq_buf;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialization done with PCI system, hardware, firmware.
|
|
|
|
* Add host to SCSI
|
|
|
|
*/
|
|
|
|
err = scsi_add_host(lp->host, &pdev->dev);
|
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"fnic: scsi_add_host failed...exiting\n");
|
|
|
|
goto err_out_free_rq_buf;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Start local port initiatialization */
|
|
|
|
|
|
|
|
lp->link_up = 0;
|
|
|
|
lp->tt = fnic_transport_template;
|
|
|
|
|
|
|
|
lp->max_retry_count = fnic->config.flogi_retries;
|
2009-05-01 17:01:26 +00:00
|
|
|
lp->max_rport_retry_count = fnic->config.plogi_retries;
|
2009-04-18 01:33:26 +00:00
|
|
|
lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
|
|
|
|
FCP_SPPF_CONF_COMPL);
|
|
|
|
if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
|
|
|
|
lp->service_params |= FCP_SPPF_RETRY;
|
|
|
|
|
|
|
|
lp->boot_time = jiffies;
|
|
|
|
lp->e_d_tov = fnic->config.ed_tov;
|
|
|
|
lp->r_a_tov = fnic->config.ra_tov;
|
|
|
|
lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
|
|
|
|
fc_set_wwnn(lp, fnic->config.node_wwn);
|
|
|
|
fc_set_wwpn(lp, fnic->config.port_wwn);
|
|
|
|
|
|
|
|
fc_lport_init(lp);
|
[SCSI] fcoe, fnic, libfc: modifies current code paths to use EM anchor list
Modifies current code to use EM anchor list in EM allocation, EM free,
EM reset, exch allocation and exch lookup code paths.
1. Modifies fc_exch_mgr_alloc to accept EM match function and then
have allocated EM added to the lport using fc_exch_mgr_add API
while also updating EM kref for newly added EM.
2. Updates fc_exch_mgr_free API to accept only lport pointer instead
EM and then have this API free all EMs of the lport from EM anchor
list.
3. Removes single lport pointer link from the EM, which was used in
associating lport pointer in newly allocated exchange. Instead have
lport pointer passed along new exchange allocation call path and
then store passed lport pointer in newly allocated exchange, this
will allow a single EM instance to be used across more than one
lport and used in EM reset to reset only lport specific exchanges.
4. Modifies fc_exch_mgr_reset to reset all EMs from the EM anchor list
of the lport, adds additional exch lport pointer (ep->lp) check for
shared EM case to reset exchange specific to a lport requested reset.
5. Updates exch allocation API fc_exch_alloc to use EM anchor list and
its anchor match func pointer. The fc_exch_alloc will walk the list
of EMs until it finds a match, a match will be either null match
func pointer or call to match function returning true value.
6. Updates fc_exch_recv to accept incoming frame on local port using
only lport pointer and frame pointer without specifying EM instance
of incoming frame. Instead modified fc_exch_recv to locate EM for the
incoming frame by matching xid of incoming frame against a EM xid range.
This change was required to use EM list in libfc Rx path and after this
change the lport fc_exch_mgr pointer emp is not needed anymore, so
removed emp pointer.
7. Updates fnic for removed lport emp pointer and above modified libfc APIs
fc_exch_recv, fc_exch_mgr_alloc and fc_exch_mgr_free.
8. Removes exch_get and exch_put from libfc_function_template as these
are no longer needed with EM anchor list and its match function use.
Also removes its default function fc_exch_get.
A defect this patch introduced regarding the libfc initialization order in
the fnic driver was fixed by Joe Eykholt <jeykholt@cisco.com>.
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-07-30 00:05:10 +00:00
|
|
|
fc_exch_init(lp);
|
2009-04-18 01:33:26 +00:00
|
|
|
fc_elsct_init(lp);
|
|
|
|
fc_rport_init(lp);
|
|
|
|
fc_disc_init(lp);
|
|
|
|
|
[SCSI] fcoe, fnic, libfc: modifies current code paths to use EM anchor list
Modifies current code to use EM anchor list in EM allocation, EM free,
EM reset, exch allocation and exch lookup code paths.
1. Modifies fc_exch_mgr_alloc to accept EM match function and then
have allocated EM added to the lport using fc_exch_mgr_add API
while also updating EM kref for newly added EM.
2. Updates fc_exch_mgr_free API to accept only lport pointer instead
EM and then have this API free all EMs of the lport from EM anchor
list.
3. Removes single lport pointer link from the EM, which was used in
associating lport pointer in newly allocated exchange. Instead have
lport pointer passed along new exchange allocation call path and
then store passed lport pointer in newly allocated exchange, this
will allow a single EM instance to be used across more than one
lport and used in EM reset to reset only lport specific exchanges.
4. Modifies fc_exch_mgr_reset to reset all EMs from the EM anchor list
of the lport, adds additional exch lport pointer (ep->lp) check for
shared EM case to reset exchange specific to a lport requested reset.
5. Updates exch allocation API fc_exch_alloc to use EM anchor list and
its anchor match func pointer. The fc_exch_alloc will walk the list
of EMs until it finds a match, a match will be either null match
func pointer or call to match function returning true value.
6. Updates fc_exch_recv to accept incoming frame on local port using
only lport pointer and frame pointer without specifying EM instance
of incoming frame. Instead modified fc_exch_recv to locate EM for the
incoming frame by matching xid of incoming frame against a EM xid range.
This change was required to use EM list in libfc Rx path and after this
change the lport fc_exch_mgr pointer emp is not needed anymore, so
removed emp pointer.
7. Updates fnic for removed lport emp pointer and above modified libfc APIs
fc_exch_recv, fc_exch_mgr_alloc and fc_exch_mgr_free.
8. Removes exch_get and exch_put from libfc_function_template as these
are no longer needed with EM anchor list and its match function use.
Also removes its default function fc_exch_get.
A defect this patch introduced regarding the libfc initialization order in
the fnic driver was fixed by Joe Eykholt <jeykholt@cisco.com>.
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-07-30 00:05:10 +00:00
|
|
|
if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
|
|
|
|
FCPIO_HOST_EXCH_RANGE_END, NULL)) {
|
|
|
|
err = -ENOMEM;
|
|
|
|
goto err_out_remove_scsi_host;
|
|
|
|
}
|
|
|
|
|
2009-04-18 01:33:26 +00:00
|
|
|
fc_lport_config(lp);
|
|
|
|
|
|
|
|
if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
|
|
|
|
sizeof(struct fc_frame_header))) {
|
|
|
|
err = -EINVAL;
|
|
|
|
goto err_out_free_exch_mgr;
|
|
|
|
}
|
|
|
|
fc_host_maxframe_size(lp->host) = lp->mfs;
|
|
|
|
|
|
|
|
sprintf(fc_host_symbolic_name(lp->host),
|
|
|
|
DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
|
|
|
|
|
|
|
|
spin_lock_irqsave(&fnic_list_lock, flags);
|
|
|
|
list_add_tail(&fnic->list, &fnic_list);
|
|
|
|
spin_unlock_irqrestore(&fnic_list_lock, flags);
|
|
|
|
|
|
|
|
INIT_WORK(&fnic->link_work, fnic_handle_link);
|
|
|
|
INIT_WORK(&fnic->frame_work, fnic_handle_frame);
|
|
|
|
skb_queue_head_init(&fnic->frame_queue);
|
2009-11-03 19:49:22 +00:00
|
|
|
skb_queue_head_init(&fnic->tx_queue);
|
2009-04-18 01:33:26 +00:00
|
|
|
|
|
|
|
/* Enable all queues */
|
|
|
|
for (i = 0; i < fnic->raw_wq_count; i++)
|
|
|
|
vnic_wq_enable(&fnic->wq[i]);
|
|
|
|
for (i = 0; i < fnic->rq_count; i++)
|
|
|
|
vnic_rq_enable(&fnic->rq[i]);
|
|
|
|
for (i = 0; i < fnic->wq_copy_count; i++)
|
|
|
|
vnic_wq_copy_enable(&fnic->wq_copy[i]);
|
|
|
|
|
|
|
|
fc_fabric_login(lp);
|
|
|
|
|
|
|
|
vnic_dev_enable(fnic->vdev);
|
2009-11-03 19:45:37 +00:00
|
|
|
|
|
|
|
err = fnic_request_intr(fnic);
|
|
|
|
if (err) {
|
|
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
|
|
"Unable to request irq.\n");
|
|
|
|
goto err_out_free_exch_mgr;
|
|
|
|
}
|
|
|
|
|
2009-04-18 01:33:26 +00:00
|
|
|
for (i = 0; i < fnic->intr_count; i++)
|
|
|
|
vnic_intr_unmask(&fnic->intr[i]);
|
|
|
|
|
|
|
|
fnic_notify_timer_start(fnic);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_out_free_exch_mgr:
|
[SCSI] fcoe, fnic, libfc: modifies current code paths to use EM anchor list
Modifies current code to use EM anchor list in EM allocation, EM free,
EM reset, exch allocation and exch lookup code paths.
1. Modifies fc_exch_mgr_alloc to accept EM match function and then
have allocated EM added to the lport using fc_exch_mgr_add API
while also updating EM kref for newly added EM.
2. Updates fc_exch_mgr_free API to accept only lport pointer instead
EM and then have this API free all EMs of the lport from EM anchor
list.
3. Removes single lport pointer link from the EM, which was used in
associating lport pointer in newly allocated exchange. Instead have
lport pointer passed along new exchange allocation call path and
then store passed lport pointer in newly allocated exchange, this
will allow a single EM instance to be used across more than one
lport and used in EM reset to reset only lport specific exchanges.
4. Modifies fc_exch_mgr_reset to reset all EMs from the EM anchor list
of the lport, adds additional exch lport pointer (ep->lp) check for
shared EM case to reset exchange specific to a lport requested reset.
5. Updates exch allocation API fc_exch_alloc to use EM anchor list and
its anchor match func pointer. The fc_exch_alloc will walk the list
of EMs until it finds a match, a match will be either null match
func pointer or call to match function returning true value.
6. Updates fc_exch_recv to accept incoming frame on local port using
only lport pointer and frame pointer without specifying EM instance
of incoming frame. Instead modified fc_exch_recv to locate EM for the
incoming frame by matching xid of incoming frame against a EM xid range.
This change was required to use EM list in libfc Rx path and after this
change the lport fc_exch_mgr pointer emp is not needed anymore, so
removed emp pointer.
7. Updates fnic for removed lport emp pointer and above modified libfc APIs
fc_exch_recv, fc_exch_mgr_alloc and fc_exch_mgr_free.
8. Removes exch_get and exch_put from libfc_function_template as these
are no longer needed with EM anchor list and its match function use.
Also removes its default function fc_exch_get.
A defect this patch introduced regarding the libfc initialization order in
the fnic driver was fixed by Joe Eykholt <jeykholt@cisco.com>.
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-07-30 00:05:10 +00:00
|
|
|
fc_exch_mgr_free(lp);
|
2009-04-18 01:33:26 +00:00
|
|
|
err_out_remove_scsi_host:
|
2009-11-03 19:49:22 +00:00
|
|
|
fc_remove_host(lp->host);
|
|
|
|
scsi_remove_host(lp->host);
|
2009-04-18 01:33:26 +00:00
|
|
|
err_out_free_rq_buf:
|
|
|
|
for (i = 0; i < fnic->rq_count; i++)
|
|
|
|
vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
|
|
|
|
vnic_dev_notify_unset(fnic->vdev);
|
|
|
|
err_out_free_max_pool:
|
|
|
|
mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
|
|
|
|
err_out_free_dflt_pool:
|
|
|
|
mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
|
|
|
|
err_out_free_ioreq_pool:
|
|
|
|
mempool_destroy(fnic->io_req_pool);
|
|
|
|
err_out_free_resources:
|
|
|
|
fnic_free_vnic_resources(fnic);
|
|
|
|
err_out_clear_intr:
|
|
|
|
fnic_clear_intr_mode(fnic);
|
|
|
|
err_out_dev_close:
|
|
|
|
vnic_dev_close(fnic->vdev);
|
|
|
|
err_out_vnic_unregister:
|
|
|
|
vnic_dev_unregister(fnic->vdev);
|
|
|
|
err_out_iounmap:
|
|
|
|
fnic_iounmap(fnic);
|
|
|
|
err_out_release_regions:
|
|
|
|
pci_release_regions(pdev);
|
|
|
|
err_out_disable_device:
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
err_out_free_hba:
|
|
|
|
scsi_host_put(lp->host);
|
|
|
|
err_out:
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __devexit fnic_remove(struct pci_dev *pdev)
|
|
|
|
{
|
|
|
|
struct fnic *fnic = pci_get_drvdata(pdev);
|
2009-11-03 19:49:22 +00:00
|
|
|
struct fc_lport *lp = fnic->lport;
|
2009-04-18 01:33:26 +00:00
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Mark state so that the workqueue thread stops forwarding
|
|
|
|
* received frames and link events to the local port. ISR and
|
|
|
|
* other threads that can queue work items will also stop
|
|
|
|
* creating work items on the fnic workqueue
|
|
|
|
*/
|
|
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
|
|
fnic->stop_rx_link_events = 1;
|
|
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
|
|
|
|
|
|
if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
|
|
|
|
del_timer_sync(&fnic->notify_timer);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Flush the fnic event queue. After this call, there should
|
|
|
|
* be no event queued for this fnic device in the workqueue
|
|
|
|
*/
|
|
|
|
flush_workqueue(fnic_event_queue);
|
|
|
|
skb_queue_purge(&fnic->frame_queue);
|
2009-11-03 19:49:22 +00:00
|
|
|
skb_queue_purge(&fnic->tx_queue);
|
2009-04-18 01:33:26 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Log off the fabric. This stops all remote ports, dns port,
|
|
|
|
* logs off the fabric. This flushes all rport, disc, lport work
|
|
|
|
* before returning
|
|
|
|
*/
|
|
|
|
fc_fabric_logoff(fnic->lport);
|
|
|
|
|
|
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
|
|
fnic->in_remove = 1;
|
|
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
|
|
|
2009-11-03 19:49:22 +00:00
|
|
|
fcoe_ctlr_destroy(&fnic->ctlr);
|
|
|
|
fc_lport_destroy(lp);
|
2009-04-18 01:33:26 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* This stops the fnic device, masks all interrupts. Completed
|
|
|
|
* CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
|
|
|
|
* cleaned up
|
|
|
|
*/
|
|
|
|
fnic_cleanup(fnic);
|
|
|
|
|
|
|
|
BUG_ON(!skb_queue_empty(&fnic->frame_queue));
|
2009-11-03 19:49:22 +00:00
|
|
|
BUG_ON(!skb_queue_empty(&fnic->tx_queue));
|
2009-04-18 01:33:26 +00:00
|
|
|
|
|
|
|
spin_lock_irqsave(&fnic_list_lock, flags);
|
|
|
|
list_del(&fnic->list);
|
|
|
|
spin_unlock_irqrestore(&fnic_list_lock, flags);
|
|
|
|
|
|
|
|
fc_remove_host(fnic->lport->host);
|
|
|
|
scsi_remove_host(fnic->lport->host);
|
[SCSI] fcoe, fnic, libfc: modifies current code paths to use EM anchor list
Modifies current code to use EM anchor list in EM allocation, EM free,
EM reset, exch allocation and exch lookup code paths.
1. Modifies fc_exch_mgr_alloc to accept EM match function and then
have allocated EM added to the lport using fc_exch_mgr_add API
while also updating EM kref for newly added EM.
2. Updates fc_exch_mgr_free API to accept only lport pointer instead
EM and then have this API free all EMs of the lport from EM anchor
list.
3. Removes single lport pointer link from the EM, which was used in
associating lport pointer in newly allocated exchange. Instead have
lport pointer passed along new exchange allocation call path and
then store passed lport pointer in newly allocated exchange, this
will allow a single EM instance to be used across more than one
lport and used in EM reset to reset only lport specific exchanges.
4. Modifies fc_exch_mgr_reset to reset all EMs from the EM anchor list
of the lport, adds additional exch lport pointer (ep->lp) check for
shared EM case to reset exchange specific to a lport requested reset.
5. Updates exch allocation API fc_exch_alloc to use EM anchor list and
its anchor match func pointer. The fc_exch_alloc will walk the list
of EMs until it finds a match, a match will be either null match
func pointer or call to match function returning true value.
6. Updates fc_exch_recv to accept incoming frame on local port using
only lport pointer and frame pointer without specifying EM instance
of incoming frame. Instead modified fc_exch_recv to locate EM for the
incoming frame by matching xid of incoming frame against a EM xid range.
This change was required to use EM list in libfc Rx path and after this
change the lport fc_exch_mgr pointer emp is not needed anymore, so
removed emp pointer.
7. Updates fnic for removed lport emp pointer and above modified libfc APIs
fc_exch_recv, fc_exch_mgr_alloc and fc_exch_mgr_free.
8. Removes exch_get and exch_put from libfc_function_template as these
are no longer needed with EM anchor list and its match function use.
Also removes its default function fc_exch_get.
A defect this patch introduced regarding the libfc initialization order in
the fnic driver was fixed by Joe Eykholt <jeykholt@cisco.com>.
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-07-30 00:05:10 +00:00
|
|
|
fc_exch_mgr_free(fnic->lport);
|
2009-04-18 01:33:26 +00:00
|
|
|
vnic_dev_notify_unset(fnic->vdev);
|
|
|
|
fnic_free_intr(fnic);
|
2009-11-03 19:45:37 +00:00
|
|
|
fnic_free_vnic_resources(fnic);
|
2009-04-18 01:33:26 +00:00
|
|
|
fnic_clear_intr_mode(fnic);
|
|
|
|
vnic_dev_close(fnic->vdev);
|
|
|
|
vnic_dev_unregister(fnic->vdev);
|
|
|
|
fnic_iounmap(fnic);
|
|
|
|
pci_release_regions(pdev);
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
pci_set_drvdata(pdev, NULL);
|
2009-11-03 19:49:22 +00:00
|
|
|
scsi_host_put(lp->host);
|
2009-04-18 01:33:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static struct pci_driver fnic_driver = {
|
|
|
|
.name = DRV_NAME,
|
|
|
|
.id_table = fnic_id_table,
|
|
|
|
.probe = fnic_probe,
|
|
|
|
.remove = __devexit_p(fnic_remove),
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __init fnic_init_module(void)
|
|
|
|
{
|
|
|
|
size_t len;
|
|
|
|
int err = 0;
|
|
|
|
|
|
|
|
printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
|
|
|
|
|
|
|
|
/* Create a cache for allocation of default size sgls */
|
|
|
|
len = sizeof(struct fnic_dflt_sgl_list);
|
|
|
|
fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
|
|
|
|
("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
|
|
|
|
SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA,
|
|
|
|
NULL);
|
|
|
|
if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
|
|
|
|
printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
|
|
|
|
err = -ENOMEM;
|
|
|
|
goto err_create_fnic_sgl_slab_dflt;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Create a cache for allocation of max size sgls*/
|
|
|
|
len = sizeof(struct fnic_sgl_list);
|
|
|
|
fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
|
|
|
|
("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
|
|
|
|
SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA,
|
|
|
|
NULL);
|
|
|
|
if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
|
|
|
|
printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
|
|
|
|
err = -ENOMEM;
|
|
|
|
goto err_create_fnic_sgl_slab_max;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Create a cache of io_req structs for use via mempool */
|
|
|
|
fnic_io_req_cache = kmem_cache_create("fnic_io_req",
|
|
|
|
sizeof(struct fnic_io_req),
|
|
|
|
0, SLAB_HWCACHE_ALIGN, NULL);
|
|
|
|
if (!fnic_io_req_cache) {
|
|
|
|
printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
|
|
|
|
err = -ENOMEM;
|
|
|
|
goto err_create_fnic_ioreq_slab;
|
|
|
|
}
|
|
|
|
|
|
|
|
fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
|
|
|
|
if (!fnic_event_queue) {
|
|
|
|
printk(KERN_ERR PFX "fnic work queue create failed\n");
|
|
|
|
err = -ENOMEM;
|
|
|
|
goto err_create_fnic_workq;
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_lock_init(&fnic_list_lock);
|
|
|
|
INIT_LIST_HEAD(&fnic_list);
|
|
|
|
|
|
|
|
fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
|
|
|
|
if (!fnic_fc_transport) {
|
|
|
|
printk(KERN_ERR PFX "fc_attach_transport error\n");
|
|
|
|
err = -ENOMEM;
|
|
|
|
goto err_fc_transport;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* register the driver with PCI system */
|
|
|
|
err = pci_register_driver(&fnic_driver);
|
|
|
|
if (err < 0) {
|
|
|
|
printk(KERN_ERR PFX "pci register error\n");
|
|
|
|
goto err_pci_register;
|
|
|
|
}
|
|
|
|
return err;
|
|
|
|
|
|
|
|
err_pci_register:
|
|
|
|
fc_release_transport(fnic_fc_transport);
|
|
|
|
err_fc_transport:
|
|
|
|
destroy_workqueue(fnic_event_queue);
|
|
|
|
err_create_fnic_workq:
|
|
|
|
kmem_cache_destroy(fnic_io_req_cache);
|
|
|
|
err_create_fnic_ioreq_slab:
|
|
|
|
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
|
|
|
|
err_create_fnic_sgl_slab_max:
|
|
|
|
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
|
|
|
|
err_create_fnic_sgl_slab_dflt:
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit fnic_cleanup_module(void)
|
|
|
|
{
|
|
|
|
pci_unregister_driver(&fnic_driver);
|
|
|
|
destroy_workqueue(fnic_event_queue);
|
|
|
|
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
|
|
|
|
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
|
|
|
|
kmem_cache_destroy(fnic_io_req_cache);
|
|
|
|
fc_release_transport(fnic_fc_transport);
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(fnic_init_module);
|
|
|
|
module_exit(fnic_cleanup_module);
|
|
|
|
|